Bis(pentafluorophenyl)xenon, Xe(C6F5)2: A Homoleptic Diorganoxenon Derivative

Abstract

A step forward in organo xenon chemistry: The fluoride‐initiated reaction of Me3SiC6F5 and XeF2 leads, via the intermediate C6F5XeF, to an isolable [10‐Xe‐2] species with two xenon–carbon bonds (see scheme).

A Renaissance in Noble-Gas Chemistry

“…The group of Professor Frohn at the University of Duisburg, Germany, synthesized fnrst CeFsXeF from CeFsXe* salts and N(CH3)4F by metathesis and then converted it to CeFsXeCeFs and CsFsXeCN by reacting it with Cd(C6F5)2 and (CH3)3SiCN, respectively [4]. In a different approach, the group of Professor Naumann at the University of Koeln, Germany, found that CeFsXeCeFs and CeFsXeF are directly accessible from XeFa and (CH3)3SiC6F5 [5]. and Xe-Cl bonds [6].…”

“…These compounds are remarkable because they involve, by analogy with XeF2, semi-ionic 3-center/4-electron bonds [7][8][9] that are only half as strong as the previously known predominantly covalent Xe-C and Xe-Cl bonds in the [XeCeFs]* [10,11] and [XeCl]^ [6] cations, respectively. Although the synthesis of CFsXeCFs hac^een claimed ^eady) in 1979 [12], all attempts to verify this claim have failed so far [5].…”

New organic noble gas molecules: energetics, stability and potential energy surfaces of HCCXeCCH and HCCKrCCH

“…12 Thus, the typical products of that type of organic rare gas chemistry were fully fluorinated, as C 6 F 5 -Xe-C 6 F 5 . 13 The reactions used to obtain these compounds were carried out in organic solvents, such as CH 2 Cl 2 , at temperatures not far from room temperatures.…”

Trifluoropropynylxenon(ii) tetrafluoroborate [CF3CCXe] [BF4] – isolation of an alkynylxenon(ii) compound for the first time

“…5 Recently the neutral polyfluorophenyl xenon(II) molecules of the type ArXeF, Ar 2 Xe, and ArXeArA were prepared. 6,7,8 The current research in Xe-C chemistry is compiled in some reviews. 9 In In 1999 we elaborated a convenient route to arylxenon(II) tetrafluoroborates which consists of the reaction of aryldifluoroborane with xenon difluoride in CH 2 Cl 2 at 240 to 230 °C.…”